Pen holder for a cellular phone



FIG. 1 is a perspective view of the pen holder for a cellular phone, the phone depicted by means of broken lines being shown for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a front elevational view of the pen holder for a cellular phone; and,

FIG. 3 is a side elevational view of the pen holder for a cellular phone. 

The ornamental design for a pen holder for a cellular phone, as shown and described. 